Current bullet character, and optional counter for automatically numbered bullets. The character may be:

• (the APL format symbol)
#. to get bullets shown as 1. 2. etc.
(@) to get (a), (b) and so on
(^) to get (i), (ii) and so on

Any short text vector is valid. The characters # and @ are substituted with the current bullet counter (starting from 1 by default) as either a decimal number or an element from a-z, A-Z. For Roman numbers use ^ as the placeholder.

leaf.Bullet '•'        © simple bullets
leaf.Bullet '(#)' 12   © numbers from 12

To start from (A) set the initial bullet counter at 27:

leaf.Bullet '(@)' 27